abc 2000 Series User Manual page 42

startup DC braking time/Pre�
P1.06
Startup DC braking is generally used during restart of the AC drive
after the rotating motor stops. Pre-excitation is used to make the AC
drive build magnetic tield for the asynchronous motor before startup
to improve the responsiveness.
Startup DC braking is valid only for direct start. In 1his case, the AC
drive performs DC braking at the set startup DC braking current.
Aller the startup DC braking time, 1he AC drive starts
startup DC braking time is 0, the AC drive starts directly without DC
braking. The larger the startup DC braking current is, the larger the
braking force is.
If the startup mode is pre-excited start, the AC drive builds magnetic
field based on the
the AC drive starts to run. If the pra-excilad time is
starts directly without pre-excitation. The startup DC braking current
or pre-excited current is a percentage relative to the base Value.
If the rated motor current is less than or equal to 80% of the rated
AC drive current, the base value is the rated motor current. If the
rated motor current is greater than 80% of the rated AC drive
current, the base value is 80% of the rated AC drive current.
Acceleration/
Deceleration mode
P1.07
Setting Range
It is used to set the frequency c hange m ode d uring the AC drive
start and stop process.
0: linear acceleration/deceleration
The output frequency increases or decreases in linear mode. The
MT- 000 provides four group of acceleration/deceleration time, which
can be selected by using P5.00 to P5.08.
1 : S-curve acceleration/deceleration A
The output frequency is incremented or decremented according
to the S curve. S curve requires gentle start or stop the use of
venues, such as elevators, conveyor belts and so on. Function
Code P1 .08 and P1 .09, respectively, define 1he proportion of S-curve
acceleration a nd d eceleration ti me of the in itial segment an d the
end of the period.
excited time
set
pre-excited current. After the pre-excited time,
0
linear acceleration/deceleration
1 S-cuiva acceleration/deceleration
S-curve a:cce!erationldeooleration B
Detailed Function
Default
Default
O.Os-100.0s
1D
run. If 1he
D,
the AC drive
A